-- Создаем таблицу users, если она не существует
CREATE TABLE IF NOT EXISTS users (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  email text UNIQUE NOT NULL,
  username text UNIQUE NOT NULL,
  role text NOT NULL DEFAULT 'user',
  is_critic boolean DEFAULT false,
  profile_picture text,
  bio text,
  created_at timestamptz DEFAULT now()
);

-- Создаем таблицу media, если она не существует
CREATE TABLE IF NOT EXISTS media (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  title text NOT NULL,
  type text NOT NULL DEFAULT 'movie',
  poster_url text,
  backdrop_url text,
  overview text,
  release_date date,
  created_at timestamptz DEFAULT now(),
  created_by uuid REFERENCES users(id),
  is_published boolean DEFAULT false
);

-- Создаем таблицу reviews, если она не существует
CREATE TABLE IF NOT EXISTS reviews (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  user_id uuid REFERENCES users(id),
  media_id uuid REFERENCES media(id),
  content text NOT NULL,
  ratings jsonb NOT NULL,
  created_at timestamptz DEFAULT now(),
  has_spoilers boolean DEFAULT false
);

-- Создаем индексы для оптимизации запросов
CREATE INDEX IF NOT EXISTS idx_media_type ON media(type);
CREATE INDEX IF NOT EXISTS idx_media_created_by ON media(created_by);
CREATE INDEX IF NOT EXISTS idx_reviews_user_id ON reviews(user_id);
CREATE INDEX IF NOT EXISTS idx_reviews_media_id ON reviews(media_id);

-- Обновляем политики безопасности
DROP POLICY IF EXISTS "Users can read all users" ON users;
DROP POLICY IF EXISTS "Users can update own profile" ON users;
DROP POLICY IF EXISTS "Anyone can read published media" ON media;
DROP POLICY IF EXISTS "Admins and editors can manage all media" ON media;
DROP POLICY IF EXISTS "Anyone can read reviews" ON reviews;
DROP POLICY IF EXISTS "Users can create reviews" ON reviews;
DROP POLICY IF EXISTS "Users can update own reviews" ON reviews;
DROP POLICY IF EXISTS "Users can delete own reviews" ON reviews;

-- Политики для users
CREATE POLICY "Users can read all users"
  ON users FOR SELECT
  TO authenticated
  USING (true);

CREATE POLICY "Users can update own profile"
  ON users FOR UPDATE
  TO authenticated
  USING (auth.uid() = id);

CREATE POLICY "Users can insert own profile"
  ON users FOR INSERT
  TO authenticated
  WITH CHECK (auth.uid() = id);

-- Политики для media
CREATE POLICY "Anyone can read published media"
  ON media FOR SELECT
  TO authenticated
  USING (is_published = true);

CREATE POLICY "Admins and editors can manage all media"
  ON media FOR ALL
  TO authenticated
  USING (
    EXISTS (
      SELECT 1 FROM users
      WHERE id = auth.uid()
      AND role IN ('admin', 'editor')
    )
  );

-- Политики для reviews
CREATE POLICY "Anyone can read reviews"
  ON reviews FOR SELECT
  TO authenticated
  USING (true);

CREATE POLICY "Users can create reviews"
  ON reviews FOR INSERT
  TO authenticated
  WITH CHECK (auth.uid() = user_id);

CREATE POLICY "Users can update own reviews"
  ON reviews FOR UPDATE
  TO authenticated
  USING (auth.uid() = user_id);

CREATE POLICY "Users can delete own reviews"
  ON reviews FOR DELETE
  TO authenticated
  USING (auth.uid() = user_id);

-- Включаем Row Level Security
ALTER TABLE users ENABLE ROW LEVEL SECURITY;
ALTER TABLE media ENABLE ROW LEVEL SECURITY;
ALTER TABLE reviews ENABLE ROW LEVEL SECURITY;